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Size effect on hardness for micro-sized and nano-sized YAG transparent ceramics |
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| Authors: | Haomin Wang Zhongwen Lu Zhiyong Huang Julie Cedelle Qingyuan Wang |
| Affiliation: | 1. Institute for Advanced Study, Chengdu University, Chengdu 610106, China;2. Chengdu Fine Optical Engineering Research Center, Chengdu 610041, China;3. College of Aeronautics and Astronautics, Sichuan University, Chengdu 610064, China;4. Université Paris Nanterre, LEME, 50 Rue de Sèvres, 92410 Ville d′Avray, France;5. School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China |
| Abstract: | Traditional micro-sized and nano-sized YAG transparent ceramics were tested by nanoindentation at different peak loads. The micro-sized YAG transparent ceramics show a marked indentation size effect (ISE). However, for the nano-sized YAG transparent ceramics, the hardness was constant in the whole investigated range without any evidence of ISE. We show that the absence of indentation size effect for nano-sized YAG transparent ceramics can be accurately modeled using the plastic deformation mechanism of grain boundary sliding. |
| Keywords: | Nanoindentation Indentation size effect Hardness Grain boundary sliding Nano ceramic |
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